Upgrading throttle body with heads/cam

[98intrigue]

During my rebuild, I'm having headwork done and doing an aftermarket cam. I already have an intake, Belanger headers, and exhaust. I'll top it all off with a tune to tie the whole build together. I was wondering what the synopsis is regarding aftermarket throttle bodies? I'm thinking of trying out the JTS throttle body.

I've read that on a stock motor, the gains are relatively unnoticeable; with headwork to allow more airflow, the gains have been worth it (from reading 345s-bspinnin and sscjcreeper builds). I was wondering if anyone has any other personal experience with the JTS throttle bodies since they seem to be bigger in the Rams.

 

[345s-bspinnin]

There are a few rule-of-thumb equations regarding volumetric air flow needs per horsepower. If you take the cross-sectional of our OEM throttle bodies, you will see that it is a bottle neck at 550+whp power levels. Depending on the quality of the head work, JTS' slightly larger throttle body will still be a restriction. My recommendation (backed by dyno proof) indicates that you will need a single blade throttle body that maximizes cross sectional area.

My $.02

 

[ROCKET62]

And the most important part of the equation will be the tune. You will be making some crazy hp with the cam and headwork - upwards of 700 at the flywheel would be my guess.

 

[anton28]

Decided to keep the car? Good choice!

Def go with the throttle bodies. Ive put them on every car ive had and notice a difference right away. Especially if you are doing heads, cam and already are running headers.